Definition of zippos:
(adj) :
(slang) Zero; none whatsoever.
(n) :
(informal, emphatic) Zero. Typically used for emphasis, as when the listener might expect a positive quantity.
(v) :
(slang) To light on fire.
(n) :
A reusable lighter.
(n) :
(military, slang) A boat, tank, etc. equipped with flamethrowers.
(v) :
Alternative spelling of zippo. [(slang) To light on fire.]